Global Patent Index - EP 0769624 A1

EP 0769624 A1 19970423 - Method and apparatus for load balancing among multiple compressors

Title (en)

Method and apparatus for load balancing among multiple compressors

Title (de)

Verfahren und Vorrichtung zur Lastausgleichung zwischen mehreren Verdichtern

Title (fr)

Procédé et appareil d'équilibrage de charge entre compresseurs multiples

Publication

EP 0769624 A1 19970423 (EN)

Application

EP 96420313 A 19961018

Priority

US 54611495 A 19951020

Abstract (en)

Balancing the load between series compressors is not trivial. An approach os disclosed to balance loads for compression systems which have the characteristic that the surge parameters, S, change in the same direction with rotational speed during the balancing process. Load balancing control involves equalizing the pressure ratio, rotational speed, or power (or functions of these) when the compressors are operating far from surge. Then, as surge is approached, all compressors are controlled, such that they arrive at their surge control lines simultaneously. <IMAGE>

IPC 1-7

F04D 27/02; F04D 27/00

IPC 8 full level

F04D 15/00 (2006.01); F04D 27/00 (2006.01); F04D 27/02 (2006.01)

CPC (source: EP US)

F04D 27/02 (2013.01 - EP US); F04D 27/0269 (2013.01 - EP US)

Citation (search report)

  • [A] EP 0576238 A1 19931229 - COMPRESSOR CONTROLS CORP [US]
  • [A] EP 0132487 A2 19850213 - MASCHF AUGSBURG NUERNBERG AG [DE]
  • [A] DE 4122631 A1 19930114 - LINDE AG [DE]
  • [A] US 4494006 A 19850115 - STAROSELSKY NAUM [US], et al
  • [A] EP 0593225 A1 19940420 - INGERSOLL RAND CO [US]
  • [A] STAROSELSKY, N: "Parallel Centrifugal Gas Compressors can be controlled more effectively", OIL & GAS JOURNAL, vol. 84, no. 44, 3 November 1986 (1986-11-03), TULSA, OKLA, USA, pages 78 - 82, XP002023664
  • [A] STAROSELSKY, N: "Improved surge control for centrifugal compressors.", CHEMICAL ENGINEERING, May 1979 (1979-05-01), pages 175 - 184, XP002023665

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0769624 A1 19970423; EP 0769624 B1 20011219; AT E211222 T1 20020115; BG 100922 A 19970530; CA 2184130 A1 19970421; CZ 304696 A3 19970514; DE 69618140 D1 20020131; DE 69618140 T2 20030116; EA 000267 B1 19990225; EA 199600085 A2 19970630; EA 199600085 A3 19970930; HR P960476 A2 19970831; HU 9602898 D0 19961230; HU P9602898 A2 19980428; HU P9602898 A3 20000328; NO 963591 D0 19960828; NO 963591 L 19970421; PL 316607 A1 19970428; SK 132996 A3 19980114; UA 41988 C2 20011015; US 5743715 A 19980428

DOCDB simple family (application)

EP 96420313 A 19961018; AT 96420313 T 19961018; BG 10092296 A 19961018; CA 2184130 A 19960826; CZ 304696 A 19961017; DE 69618140 T 19961018; EA 199600085 A 19961018; HR P960476 A 19961018; HU P9602898 A 19961018; NO 963591 A 19960828; PL 31660796 A 19961021; SK 132996 A 19961016; UA 96103950 A 19961018; US 54611495 A 19951020